42222424109 has 2 divisors, whose sum is σ = 42222424110. Its totient is φ = 42222424108.

The previous prime is 42222424099. The next prime is 42222424121. The reversal of 42222424109 is 90142422224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36281868484 + 5940555625 = 190478^2 + 77075^2 .

It is a cyclic number.

It is not a de Polignac number, because 42222424109 - 2¹² = 42222420013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42222423109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111212054 + 21111212055.

It is an arithmetic number, because the mean of its divisors is an integer number (21111212055).

Almost surely, 2^42222424109 is an apocalyptic number.

It is an amenable number.

42222424109 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222424109 is an equidigital number, since it uses as much as digits as its factorization.

42222424109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 42222424109 in words is "forty-two billion, two hundred twenty-two million, four hundred twenty-four thousand, one hundred nine".